How can i get A+ as an undergrad in my courses?

Lemme warn u i am pretty lazy i have this with internet.. whenever i sit in front of it i cant shut mah damn lappie toppie down.. There so much interested stuff like zooming in on celebs , reading their tweets, watching movies etc... Basically i reach home at like 3.00 Pm and then after that i am free all day... Can you suggest me some good schedule in order to do good in my 3 courses.... Can you plz set me up with the perfect timetable.. I know its difficult but if you would be in my situation what would you do?